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How Much Is 3.11 Cups of Black Beans in Ounces?

3.11 cups of black beans weighs 20.19 oz. This is based on black beans having a density of 184g per cup. Because cups measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 3.11 cups.

3.11 cups of black beans
=
20.19oz
Result using all cup standards info
20.19 oz (US) 21.33 oz (Metric Cup) 24.24 oz (Imperial Cup)
3.11 cups of black beans is also
20.19

Formula and Step-by-Step

cups × 184g/cup ÷ 28.3495g/oz = ounces
  1. Start with 3.11 cups of black beans
  2. 1 cup of black beans = 184g
  3. 3.11 × 184 = 572.24g
  4. Convert grams to ounces: 572.24 ÷ 28.3495 = 20.19 oz

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

Black beans are dense at 184g per cup. Pour them into the measuring cup and level off without shaking, which settles the beans and increases the weight.

Black Beans at Different Amounts

How black beans scales across common cups measurements. Your amount (3.11 cups) is highlighted.

0.75 cups4.87 oz1 cup6.49 oz1.5 cups9.74 oz2 cups12.98 oz3 cups19.47 oz3.11 cups20.19 oz4 cups25.96 oz5 cups32.45 oz

For reference, 3.11 cups of black beans (572.24g) is close in weight to a basketball (624g).

Other Amounts of Black Beans

Cups US Ounces Metric Cup Imperial Cup
0.25 cups 1.62 oz 1.71 oz 1.95 oz
0.33 cups 2.14 oz 2.26 oz 2.57 oz
0.5 cups 3.25 oz 3.43 oz 3.90 oz
0.75 cups 4.87 oz 5.14 oz 5.85 oz
1 cup 6.49 oz 6.86 oz 7.79 oz
1.5 cups 9.74 oz 10.29 oz 11.69 oz
2 cups 12.98 oz 13.72 oz 15.59 oz
3 cups 19.47 oz 20.58 oz 23.38 oz
3.11 cups 20.19 oz 21.33 oz 24.24 oz
4 cups 25.96 oz 27.43 oz 31.18 oz
5 cups 32.45 oz 34.29 oz 38.97 oz

Understanding the Units

What is a Cup?

A cup is a US customary unit of volume equal to 236.588 milliliters or 8 fluid ounces. It is the most common volume measurement in American recipes. One cup can be divided into 16 tablespoons or 48 teaspoons.

What is an Ounce?

Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.

Frequently Asked Questions

About 20.19 oz, based on black beans having a density of 184g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of cups by 184 (grams per cup for black beans), then divide by 28.3495 to convert grams to ounces. For 3.11 cups: 3.11 × 184 = 572.24g, then 572.24 ÷ 28.3495 = 20.19 oz.
For the most accurate results, weigh black beans on a kitchen scale. If measuring by volume, spoon the ingredient into the measuring cup and level it off with a straight edge rather than scooping directly.
Weight-per-cup values vary because of differences in how the ingredient is measured (spooned vs scooped), grind size, moisture content, and settling during storage. Our values use standardized measurement methods from established culinary references.
Reverse the conversion: 20.19 oz × 28.3495 = 572.24g, then 572.24g ÷ 184 = 3.11 cups. Or use the Ounces to Cups converter.